US9046416B2ActiveUtilityA1

Device for the radiometric calibration of infra-red measuring devices

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Assignee: BARTH JOCHENPriority: Jun 1, 2010Filed: May 25, 2011Granted: Jun 2, 2015
Est. expiryJun 1, 2030(~3.9 yrs left)· nominal 20-yr term from priority
Inventors:Jochen Barth
G01J 5/0831G01J 5/522G01J 5/08G01J 5/53
56
PatentIndex Score
1
Cited by
8
References
6
Claims

Abstract

A device for the radiometric calibration of infra-red measuring devices is provided. The device is in the form of a heated metal surface that is used as a radiant surface and is coated with a high-emission material. The device includes a spherical segment, the interior of which is coated with the high-emission material and the opening of the spherical segment is used as an aperture for an infra-red device that can be arranged in the center of the aperture.

Claims

exact text as granted — not AI-modified
The invention claimed is: 
     
       1. A device for radiometric calibration of an infrared measuring device, the device comprising:
 a spherical segment having an opening coincident with an opening of the device, wherein the spherical segment is coated by a high-emission material on an inner side, wherein the spherical segment is either a hemisphere or a portion of a hemisphere, 
 wherein the device is in the form of a heated metal surface which serves as an emitting surface. 
 
     
     
       2. The device as claimed in  claim 1 , wherein a surface on the inner side of the spherical segment has a roughened surface that is coated with a material with an emissivity >0.9. 
     
     
       3. The device as claimed in  claim 1 , wherein the spherical segment is made of copper. 
     
     
       4. The device as claimed in  claim 1 , further comprising:
 means for temperature control of the spherical segment, wherein the means for temperature control are soldered onto an outside of the spherical segment. 
 
     
     
       5. The device as claimed in  claim 4 , wherein the temperature control means is in thermal contact with the spherical segment and is an electric heater, a Peltier element, or a pipe though which a temperature-controllable liquid is routed. 
     
     
       6. The device as claimed in  claim 4 , further comprising:
 a thermocouple that is in thermal contact with the spherical segment, wherein the thermocouple is configured to measure and regulate a temperature of the emitting surface.

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